Fastening means for collector bags



l Jan. 6, 1948. P 515 EER FASTENING MEANS FOR COLLECTOR BAGS Filed Deo. 6, 1944 Patented Jan. 6, 1948 Paul Speer, Bogota, N. J

.assigner tolArmcnr anni:k

Company, Chicago, Ill.,a corporation o f ,Illinois Application December 6, 1944; Sveria11n1\Io.V 566,943' zoiaims. (Grasser-.171);

This invention relates to fastening means for collector bags and more particularly to means for detachably connecting collector bags to nipples or the like.

Fabric collector bags have heretofore been widely used for collection of dust, chemical powders and like materials. Ordinarily the bags have been clamped to tubular nipples by metallic clasps or straps. Fastenings of this type are slow and difcult to attach and detach, do not hold the bags in dust tight relationship with the nipples,

and tend to cause excessive wear on the bags when are subjected to vibration.

It is one of the Objects of the present invention to provide a fastening means by which collector bags can be quickly and easily attached and detached, which holds the bags in dust tight relationship to the nipples and which causes a minimum amount of wear on the bags in use.

Another object of the invention is to provide a fastening means including an annular resilient ring t hold the neck of a collector bag tightly against an annular bead on the nipple.

Still another object is to provide a conical guide member by which the ring may be easily and quickly placed over the nipple. Preferably the ring is split so that it can be sprung onto and off of the nipple.

The above and other objects and advantages of the invention will be more readily apparent from the following description when read in connection with the accompanying drawing, in which- Figure 1 is a partial elevation illustrating a collector bag fastened to a nipple according to the invention;

Figure 2 is a View partly in elevation and partly in section showing the ring and guide member in. place; and

Figure 3 is an elevation illustrating the manner of fastening the bag to the nipple.

The present invention may be utilized in connection with any type of apparatus which produces dust or powder to be collected and which includes a tubular discharge nipple I0 thru which the dust or powder flows. At the outer end of the nipple I0 an annular bead I I is provided which may be formed by a wire welded or soldered to the end of the nipple. A collector bag I2 of any desired type is formed with a tubular neck portion to t over the nipple and the bead I I and to collect any dust or powder flowing thru the nipple.

According to the present invention the bag is held in place on the nipple by an annular resilient ring I3 which is preferably of circular cross section. The ring I3 may conveniently be formed of rubber altho other resilient materialscouldgbe employedequally-lwell. When the ring is in place as shown in Figure 1, it engages the bag uniformly around its circumference and presses it evenly and tightly against the nipple at a point just above the bead II. Thus a dust tight connection is formed between the bag and the nipple without any pinching of the material. Due to the uniformity of the connection between the bag and the nipple and the resilience of the nipple wear on the bag will be minimized in the event it is subjected to vibration in use.

In order to install the ring I3 easily and conveniently on the nipple, a conical guide member I4 is provided. The guide member I4 is split as indicated at I5 so that it can be `sprung to be slipped over the bag and over the outer end of the nipple. At its larger end the guide member I4 is formed with a series of inwardly turned fingers I6 which hook over the bead II as best seen in Figure 2, to hold the guide member in place.

To connect a bag to the nipple a ring I3 is first slipped over the neck of the bag and the bag is then slipped over the nipple. The guide member I4 may then be placed over the bag with the lingers I6 thereon hooking over the bead I I. The ring I3 may then be forced up over the guide member I4 as indicated by the several dotted line positions in Figure 3 until it finally slides over the fingers I6 to engage the bag and the nipple just inside of the bead. The guide member I4 may then be sprung away from the nipple and removed from the bag. At this time, the installation is completed and the bag is ready for use.

In moving the ring I3 over the guide member I4 the ring may be rolled along the surface of the guide member. It may be seen that in such rolling movement the ring rotates about its own annular axis. Preferably, this ring I3 is circular in cross section to facilitate the rolling movement.

The bag. may easily be removed when desired simply by grasping the ring I3 and sliding or rolling it over the bead II to free the bag. It will thus be seen that the bag may easily and quickly be connected to and removed from the nipple. facilitates its removal as well as its assembly in the improved structure.

While one embodiment of the invention has been shown and described in detail herein, it will be understood that this is illustrative only and is not intended as a definition of the scope The circular cross section of the ringv 3 of the invention, reference being had for this purpose to the appended claims.

What is claimed is:

1. Fastening means for collector bags comprising a tubular nipple having a bead adjacent its outer end over which the neck of a collector bag is adapted to fit, a conical guide to fit over the neck of the bag with its larger end overlying the bead, and an annular resilient ring adapted to be moved over the guide to a position around the bag neck and the nipple adjacent the bead.

2. Fastening means for collectorbags com prising a tubular nipple having a bead adjacent its outer end over which the neck of a collector bag is adapted to fit, a conical guide to t over the neck of the bag and having a series of inwardly turned fingers at its largerV end to hook over the bead, and an annular resilient ring adapted to be moved over the guide to a position around the bag neck and the nipple adjacent the bead.

PAUL s951119.V

REFERENCES CITED The following references are of record in the 5 file of this patent:

` Number UNITED STATES PATENTS Name Date Calvert July 13, 1909 Guarnaschelli Apr. 30, 1940 Stacey July 8, 1913 Bettis July 10, 1934 Rembert Sept. '7, 1943 Evans Aug. 5, 1913 FOREIGN PATENTS Country Date France Mar. 4, 1910 Great Britain June 9, 1941 Great Britain Apr. 16, 1940 

